Results 21 to 30 of about 936,741 (303)

Calculation of dose conversion factors for doses in the fingernails to organ doses at external gamma irradiation in air [PDF]

Radiation Measurements, 2015
Absorbed doses to fingernails and organs were calculated for a set of homogenous external gamma-ray irradiation geometries in air. The doses were obtained by stochastic modeling of the ionizing particle transport (Monte Carlo method) for a mathematical human phantom with arms and hands placed loosely along the sides of the body.
A M, Khailov, A I, Ivannikov, V G, Skvortsov, V F, Stepanenko, S P, Orlenko, A B, Flood, B B, Williams, H M, Swartz   +7 more
openaire   +2 more sources

Analysis of the external doses received by workers involved in the mitigation of the Goiania radiological accident

Brazilian Journal of Radiation Sciences, 2018
In 1987, after identification that a stolen head of a Cs-137 radiotherapy irradiator was violated, it starts, in Goiania, the screening of the involved persons, the decontamination and the collection of the radioactive waste.
Claudia Lucia de Pinho Mauricio
doaj   +1 more source

Hydrogel spacer shrinkage during external-beam radiation therapy following low-dose-rate brachytherapy for high-risk prostate cancer: a case series

Journal of Medical Case Reports, 2021
Background Few studies have assessed hydrogel spacer shrinkage during external-beam radiation therapy following brachytherapy for localized high-risk prostate cancer.
Katsumaro Kubo, Masahiro Kenjo, Hideo Kawabata, Koichi Wadasaki, Mitsuru Kajiwara, Yoshiko Doi, Minoru Nakao, Hideharu Miura, Shuichi Ozawa, Yasushi Nagata   +9 more
doaj   +1 more source

External effective dose from natural radiation for the Umbria region (Italy)

Journal of Maps, 2022
This study presents the map of the external effective annual dose rate (1:200,000 scale) due to terrestrial and cosmic radiation. The terrestrial dose is assessed via gamma ray spectroscopy combining radiometric data from airborne surveys and laboratory ...
Kassandra Giulia Cristina Raptis, Matteo Albéri, Stefano Bisogno, Ivan Callegari, Enrico Chiarelli, Luca Cicala, Tommaso Colonna, Mario De Cesare, Enrico Guastaldi, Andrea Maino, Fabio Mantovani, Michele Montuschi, Andrea Motti, Norman Natali, Marco Ogna, Filippo Semenza, Andrea Serafini, Gianluigi Simone, Virginia Strati   +18 more
doaj   +1 more source

Dose received by external genital organs during preoperative radiotherapy for rectal cancer patients

Journal of Radiation and Cancer Research, 2020
Introduction: Preoperative radiotherapy, followed by surgery, is a commonly used approach for locally advanced rectal and colorectal cancer. The external genitalia receive a certain dose of radiation, which may be attributed to long-term sexual ...
Jyotiman Nath, Gautam Sarma, Bhaveshwar Yadav, Partha Pratim Medhi, Apurba Kumar Kalita, Mouchumee Bhattacharyya   +5 more
doaj   +1 more source

Response of Photon Dosimeters and Survey Instruments to New Operational Quantities Proposed by ICRU RC26

, 2018
Operational quantities in radiation protection are defined as conservative estimates of the protection quantities, which are generally not accessible to measurement.
Otto, Thomas
core   +1 more source

Randomized, open-label, phase 1/2a study to determine the maximum tolerated dose of intraventricular sustained release nimodipine for subarachnoid hemorrhage (NEWTON [Nimodipine Microparticles to Enhance Recovery While Reducing Toxicity After Subarachnoid Hemorrhage]) [PDF]

, 2016
BACKGROUND AND PURPOSE—: We conducted a randomized, open-label, phase 1/2a, dose-escalation study of intraventricular sustained-release nimodipine (EG-1962) to determine safety, tolerability, pharmacokinetics, and clinical effects in aneurysmal ...
Aldrich, Francois, Diringer, Michael N, Etminan, Nima, Faleck, Herbert J, Hanggi, Daniel, Hoh, Brian L, Macdonald, R. Loch, Mayer, Stephen A, Mocco, J, Newton Investigators,, Steiger, Hans Jakob   +10 more
core   +3 more sources

Natural radionuclide and 137Cs activity concentration in soils of the Brazilian State of Sergipe and their correlation with environmental characteristics

Brazilian Journal of Radiation Sciences
Radionuclides occur naturally in the environment, exposing living organisms to ionizing radiation. In addition, human activities have introduced artificial radionuclides such as 137Cs, among others, into the environment.
Luiz Cavalcante Ferreira, Amanda Alves da Silva, Fernando Carlos Araujo Ribeiro, Wanderson de Oliveira Sousa, Wagner Chaves Costa, Sueli Alexandra de Mesquista, Eduardo Paim Viglio   +6 more
doaj   +1 more source

Accuracy, Hemorrhagic Complications and CT Radiation Dose of Emergency External Ventricular Drain (EVD) Placement in Pediatric Patients: A 15-Year Retrospective Analysis

Diagnostics, 2023
Purpose: To assess accuracy, the frequency of hemorrhagic complications and computed tomography (CT) radiation dose parameters in pediatric patients undergoing landmark-guided external ventricular drain (EVD) placement in an emergency setting.
Robert Stahl, Melvin D’Anastasi, Robert Forbrig, Thomas Liebig, Sophie Katzendobler, Jonathan Weller, Christoph G. Trumm   +6 more
doaj   +1 more source

The Risk of Cancer from CT Scans and Other Sources of Low-Dose Radiation: A Critical Appraisal of Methodologic Quality [PDF]

, 2020
Introduction: Concern exists that radiation exposure from computerized tomography (CT) will cause thousands of malignancies. Other experts share the same perspective regarding the risk from additional sources of low-dose ionizing radiation ...
Doss, Mohan, PhD, Fairley, Romeo, MD, Murphy, Linda Suk-Ling, Schultz, Carl H, MD   +3 more
core